<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
1<%="zou dayou "  %><br>
2<% String a="hello world"; %>
<%=a %><br><br>
<br><br>
4<%   out.println(a);   %>
</body>
</html>
3<%   response.getWriter().write(a+"-]]]dsfa sdsa gfasdgdsag"); %>

<%  // out.println("<head>");   %>
<%  // out.println("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">");   %>